The Gallipoli Castle, the remains of which you can see by the sea side, was built in 711 to protect Gallipoli against the Arab attacks that lasted from 681 to 717. Later, in the Ottoman era it was repaired and now it is home to Piri Reis Museum. In the museum, effigies, paintings and maps of the famous Gallipolian seaman is exhibited. In the museum which can be visited for free, more than 130 art works are exhibited such as oil paintings, examples of maps which can be found in Piri Reis’ book “Kıtab-ı Bahriye”, weapons used by the seamen, models of mariners in the Ottoman navy, statue of Piri Reis and introductory information.